Exam 4: Central Tendency

The deviations about the mean for four out of a sample of five scores are: -3, +2, +6, -1. The fifth deviation must be

If one score in a distribution is changed to another value, it is certain that, according to raw score calculation,

The mean of a distribution is 75 and the median is 72. If 20 points are subtracted from each score, the mean of this altered distribution will be

Professor Jones gives a quiz in her statistics course and obtains the following 20 scores: Calculate: (a) the mode (b) the median (c) the mean

In the series of scores: 4, 4, 5, 7, the number 5 is

In constructing a frequency distribution, a score belonging in the top class interval is inadvertently omitted. Which measure(s) might not be affected?

The median is

For each of the following sets of scores, find (1) the mode, (2) the median, and (3) the mean: (a)12, 10, 8, 19, 8, (b)14, 12, 17, 23, (c)11, 6, 10, 11, 11, 11.

Which measure of central tendency would you use with the following distribution of scores? Explain.

(a) For the sample of scores: 7, 3, 5, 3, 3, show that .  (b) State what means in words. To what property of the mean is it related?

The measure of central tendency that may be considered as the "balance point" of the distribution is the

X₈ refers to

In the series of scores: 4, 4, 5, 7, the number 4 is

Several situations tend to make the median a more attractive choice than it might otherwise be. Which, among those described below, does not add to its attractiveness?

The highest point of a frequency curve is most closely associated with

In the series of scores: 4, 4, 5, 7, the number 4.5 is

What shape would you predict for each of the following distributions: (a) (b) (c)

For a symmetrical distribution of 10 scores the mean is calculated to be 32.6. Later it is learned that John's recorded score of 28 really should be a 35. Correcting this error will change the calculated value of

The mode is the most appropriate measure for

Measures of central tendency differ in their resistance to the effect of sampling fluctuation. From most resistant to least resistant, the order is